389320806 has 16 divisors (see below), whose sum is σ = 889876224. Its totient is φ = 111234504.

The previous prime is 389320801. The next prime is 389320807. The reversal of 389320806 is 608023983.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389320801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4634730 + ... + 4634813.

It is an arithmetic number, because the mean of its divisors is an integer number (55617264).

Almost surely, 2^389320806 is an apocalyptic number.

389320806 is an abundant number, since it is smaller than the sum of its proper divisors (500555418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389320806 is a wasteful number, since it uses less digits than its factorization.

389320806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9269555.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 389320806 is about 19731.2140021845. The cubic root of 389320806 is about 730.1899837041.

The spelling of 389320806 in words is "three hundred eighty-nine million, three hundred twenty thousand, eight hundred six".